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A scientific research achievement of Guangdong Metrology Institute won the third prize of Scientific and Technological Society of Instrumentation
[ Instrument network instrument R & D ] Recently, the scientific research achievement “Research on the Measurement Consistency of Key Parameters of Solar Cell Reliability and Its Value Transmission and Traceability Technology†completed by Guangdong Metrology Institute won the third prize of Science and Technology of China Instrument and Meter Society in 2019.
This scientific research achievement successfully achieved five aspects of technological innovation, obtained two authorized invention patents, and pioneered the development of a silicon-based thin-film solar cell traceability standard in China, in order to serve the high-tech development of the new energy industry in our province and help energy conservation and emission reduction. The implementation of the work provided the technical support for metrology.
This scientific research achievement was completed by the Energy Measurement Department. First, the method of calibrating the solar simulator's irradiation unevenness (authorized invention patent) was researched to ensure the accurate evaluation of the solar simulation light source's irradiation unevenness grade from the source. Measurements of key solar cell parameters provide consistent conditions. The second is to develop a solar simulator optical performance measuring device with absolute / relative radiation intensity power. Through the horizontal sampling frequency and vertical dynamic effective number of bits, the measurement accuracy of the solar cell photoelectric conversion signal is improved, and Multi-function calibration of key parameters such as uniformity, irradiation instability, absolute irradiation intensity, open-circuit voltage and short-circuit current of solar cell modules. The third is to carry out research on the value transfer technology from reference solar cells to solar cell modules. By researching the open-circuit voltage temperature correction, short-circuit current temperature correction, solar radiation intensity correction and other value transmission technologies of solar cells, the IV is refined. STC theoretical correction model of characteristic curve. Thus found the technology, method and route from the reference solar cell to the value transfer of solar cell modules, which can provide a consistent correction technical solution for the various types of solar cell value transfer work, and solve the key parameters of solar cells in non-STC conditions. Comparability and mutual recognition. Fourth, based on the independent process line for solar cell assembly and testing (granted invention patents), research on silicon-based thin film reference solar cells has been carried out, including reference solar cell type identification methods, solar cell light aging screening, spectral response stability, and repeatability. , Isc and Voc temperature correction, IV characteristic measurement uncertainty evaluation and other key technologies. The first domestically developed standard for traceability of silicon-based thin-film solar cells-silicon-based thin-film reference solar cells. The fifth is to explore the thin-film reference cell-solar simulator-thin-film battery module-specific quantity traceability system for thin-film battery modules, providing a technical solution for the measurement consistency of key parameters of thin-film solar cells.
Up to now, the enterprises served by this scientific research achievement have covered Guangdong, Jiangxi, Jiangsu, Zhejiang, Henan, Fujian, Hainan and other regions, and are well-known domestic new energy sources such as Hanergy Thin Film PV Co., Ltd., Jinko Energy Co., Ltd., and Global Photovoltaic Technology Co., Ltd. The company provided technical support, which greatly satisfied the domestic photovoltaic enterprises' demand for traceability of solar simulator radiation performance values.